JavaFX |插入类

Insets类是JavaFX的一部分。Insets类存储矩形区域四边的内部偏移。Insets类继承了j 艾娃。lang.反对 班

类的构造函数：

1. 插图（双a） ：为所有四个偏移构造具有相同值的新Insets实例。
2. 插图（双顶部、双右侧、双底部、双左侧） ：构造具有四个不同偏移的新Insets实例。

常用方法：

以下程序将说明Insets类的使用：

1. Java程序创建两个Inset对象并显示内容： 该程序创建两个名为 插图1 和 插图2 .当调用构造函数时，插入作为参数传递。我们将使用 getTop（） , getBottom（） , getLeft（） , getRight（） 功能和显示它们。

   // Java program to create two insets // object and display the contents import javafx.geometry.Insets; public class Insets_1 { // Main Method public static void main(String args[]) { // create two insets object Insets insets_1 = new Insets( 20 .0f); Insets insets_2 = new Insets( 20 .0f, 40 .0f, 60 .0f, 70 .0f); // display the insets display(insets_1); display(insets_2); } // display method public static void display(Insets insets) { double left, right, bottom, top; // get the insets left = insets.getLeft(); right = insets.getRight(); bottom = insets.getBottom(); top = insets.getTop(); // display the insets System.out.println( "Insets of the object" ); System.out.println( "Left= " + left + ", Right = " + right + ", Bottom = " + bottom + ", Top = " + top); } }

   输出：

   Insets of the object
   Left = 20.0, Right = 20.0, Bottom = 20.0, Top = 20.0
   Insets of the object
   Left = 70.0, Right = 40.0, Bottom = 60.0, Top = 20.0
   

2. Java程序创建三个插入对象并显示其内容，并检查它们是否相等： 该程序创建三个名为 插图1 , 插图2 和 插图3 .当调用构造函数时，插入作为参数传递。我们将使用 getTop（） , getBottom（） , getLeft（） , getRight（） 功能和显示它们。我们还将使用equals函数检查插入是否彼此相等。

   // Java program to create three objects of insets // and display its contents and check whether // they are equal to each other or not import javafx.geometry.Insets; public class Insets_2 { // Main Method public static void main(String args[]) { // create three insets objects Insets insets_1 = new Insets( 120 .0f, 150 .0f, 40 .0f, 60 .0f); Insets insets_2 = new Insets( 120 .0f, 150 .0f, 40 .0f, 60 .0f); Insets insets_3 = new Insets( 200 .0f, 120 .0f, 60 .0f, 40 .0f); // display the 3 insets display(insets_1); display(insets_2); display(insets_3); // check whether any insets is equal to other or not System.out.println( "Insets 1 equals Insets 2 = " + insets_1.equals(insets_2)); System.out.println( "Insets 2 equals Insets 3 = " + insets_2.equals(insets_3)); System.out.println( "Insets 3 equals Insets 1 = " + insets_3.equals(insets_1)); } // display Method public static void display(Insets insets) { double left, right, bottom, top; // get the insets left = insets.getLeft(); right = insets.getRight(); bottom = insets.getBottom(); top = insets.getTop(); // display the insets System.out.println( "Insets of the object" ); System.out.println( "Left= " + left + ", Right= " + right + ", Bottom= " + bottom + ", Top = " + top); } }

   输出：

   Insets of the object
   Left= 60.0, Right= 150.0, Bottom= 40.0, Top = 120.0
   Insets of the object
   Left= 60.0, Right= 150.0, Bottom= 40.0, Top = 120.0
   Insets of the object
   Left= 40.0, Right= 120.0, Bottom= 60.0, Top = 200.0
   Insets 1 equals Insets 2 = true
   Insets 2 equals Insets 3 = false
   Insets 3 equals Insets 1 = false
   

注： 上述程序可能无法在联机IDE中运行。请使用脱机编译器。

参考： https://docs.oracle.com/javafx/2/api/javafx/geometry/Insets.html